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ducmau
2 năm trước
Bài 3 Cho ba điểm A(20.#(4.c2 lập thành ba đình của tam giác. avie phương trinh tham số của đường tháng AB. bjviet phương trình tổng quát của đường tháng BC civiet phương trình đường trung tuyến AM của tam giác. diviet phương trinh tổng quát của các đường cao AH, BH, từ đó tim tọa độ trực tâm của tam giác.
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